US5022628A - Mounting for machinery - Google Patents
Mounting for machinery Download PDFInfo
- Publication number
- US5022628A US5022628A US07/376,550 US37655089A US5022628A US 5022628 A US5022628 A US 5022628A US 37655089 A US37655089 A US 37655089A US 5022628 A US5022628 A US 5022628A
- Authority
- US
- United States
- Prior art keywords
- raft
- electromagnets
- mounting
- machinery
- hull
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000010276 construction Methods 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000005428 wave function Effects 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000001846 repelling effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/0032—Arrangements for preventing or isolating vibrations in parts of the machine
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/20—Agglomeration, binding or encapsulation of solid waste
- B09B3/25—Agglomeration, binding or encapsulation of solid waste using mineral binders or matrix
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H21/00—Use of propulsion power plant or units on vessels
- B63H21/30—Mounting of propulsion plant or unit, e.g. for anti-vibration purposes
- B63H21/302—Mounting of propulsion plant or unit, e.g. for anti-vibration purposes with active vibration damping
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M5/00—Engine beds, i.e. means for supporting engines or machines on foundations
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B15/00—Other details of locks; Parts for engagement by bolts of fastening devices
- E05B15/02—Striking-plates; Keepers; Bolt staples; Escutcheons
- E05B15/0205—Striking-plates, keepers, staples
- E05B15/024—Striking-plates, keepers, staples adjustable
- E05B2015/0275—Striking-plates, keepers, staples adjustable in two directions
Definitions
- This invention relates to a mounting for machinery.
- the raft has been made as rigid as possible. This has resulted in a very large and heavy structure. Even so, however, problems are sometimes experienced as a result of vibration and flexing of the raft. This results in undesirable noise and can also result in breakdowns because of imperfect alignment of different articles of the machinery.
- One example of such problems has been the fracture of fuel pipes.
- the sensor detects a displacement due to vibration and controls a related actuator to oppose the vibration.
- Three such pairs of devices operating in the three mutually perpendicular axes will cancel the vibration in all directions. This is a basic idea of active vibration control but does not address the above problem.
- the object of this invention is to solve the above problems.
- This invention provides a mounting for machinery inherently susceptible to flexing or resonance comprising an array of electromagnetic supports for the machinery and control means for controlling currents through the electromagnetic supports so as to suppress the effects of the flexing or resonance.
- control means acts in such a way as to ensure that the integral force transmitted to the hull of the ship, or other carrier for the machinery, has a substantially zero component for vibrations associated with the aforementioned flexing and resonance, then noise and other vibration transmitted to the hull of the ship (or carrier for the machinery) can be very substantially reduced. This is an additional advantage that can be obtained by employing the invention.
- the appropriately defined weighted integral of the force transmitted may have a substantially zero component for vibration associated with the flexing and resonance such that the force, although zero over the whole area of the raft, can be greater over localised areas that provide rigid support, this thereby eliminating or reducing forces on those areas of the hull that are weaker or themselves susceptible to vibration.
- a mounting for machinery which machinery is susceptible to flexing or resonance, comprising an array of adjustable supports for the machinery each adapted to apply a force to the machinery such that the sum of such forces supports the machinery, and control means for controlling the forces so applied whereby the effects of the flexing or resonance are suppressed.
- FIG. 1 is a schematic cross-section through a ship constructed in accordance with the invention.
- FIG. 2 is a schematic illustration of the functioning of the control.
- FIG. 1 there is shown a ship having a hull 1 in which a seating 2 is installed in accordance with conventional practice.
- the seating defines a recess 3 which receives a raft 4 which, in the illustrated arrangement, is of relatively flimsy and flexible construction compared with known structures.
- the raft 4 carries various items of machinery including an engine 5a, a generator 5b and a pump 5c are linked together by links (shown schematically by the lines 6) and therefore need to be accurately aligned with each other.
- Sensing transducers 9 only two pairs of which are shown, are also mounted on the seating and on the raft and act to detect the distance between those two components at different places. Sensing transducers may be comprised of any transducer type giving an electrical output, but preferably comprise either optical or magnetic sensing means.
- An electronic control system 10 receives measurements from the sensors and controls the currents through the various electromagnets in such a way as to ensure that (a) the raft 4 does not flex or vibrate and (b) the integral force transmitted to the seating from the raft has a substantially zero component for vibrations associated with any flexing and resonance of the machinery itself.
- electromagnets 8 are described as repelling permanent magnets 7, one skilled in the art will realise that pairs of electromagnets may be used; or, alternatively, an arrangement is foreseen whereby electromagnets are used to attract metallic members connected to either the raft or the hull in order to keep the raft levitated.
- FIG. 2 a schematic illustration is shown of the functioning of the control device.
- the output of the sensors 11 undergoes a model matrix decomposition function which identifies wave functions within the raft. Once these wave functions are identified control elements for each magnetic actuator produce an inverse modal matrix configuration 14 which via the output to the actuators 15 reduces or cancels flexing and vibrations within the raft.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Ocean & Marine Engineering (AREA)
- Vibration Prevention Devices (AREA)
Abstract
Description
Claims (7)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB888816188A GB8816188D0 (en) | 1988-07-07 | 1988-07-07 | Mounting for machinery |
GB8816188 | 1988-07-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
US5022628A true US5022628A (en) | 1991-06-11 |
Family
ID=10640033
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US07/376,550 Expired - Lifetime US5022628A (en) | 1988-07-07 | 1989-07-07 | Mounting for machinery |
Country Status (4)
Country | Link |
---|---|
US (1) | US5022628A (en) |
EP (1) | EP0350333B1 (en) |
DE (1) | DE68904705T2 (en) |
GB (2) | GB8816188D0 (en) |
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5121898A (en) * | 1989-07-24 | 1992-06-16 | Tokkyo Kiki Kabushiki Kaisha | Method of controlling positions and vibrations and active vibration control apparatus therefor |
EP0514877A2 (en) * | 1991-05-20 | 1992-11-25 | Ebara Corporation | Vibration eliminating apparatus for eliminating vibration of installation floor |
US5209326A (en) * | 1989-03-16 | 1993-05-11 | Active Noise And Vibration Technologies Inc. | Active vibration control |
US5348124A (en) * | 1989-03-16 | 1994-09-20 | Active Noise And Vibration Technologies, Inc. | Active control of vibration |
US5387851A (en) * | 1991-08-22 | 1995-02-07 | Mtu Motoren-Und Turbinen-Union Muenchen Gmbh | Closed loop control apparatus with frequency filters for controlling an air gap width in electromagnetic levitation systems |
US5794909A (en) * | 1996-09-16 | 1998-08-18 | Minus K Technology, Inc. | Auto-adjust apparatus for a vibration isolation system |
US5827095A (en) * | 1995-04-19 | 1998-10-27 | Abb Industry Oy | Mount structure for supporting an electric apparatus on a ground base |
EP0992424A2 (en) | 1998-10-07 | 2000-04-12 | Electric Boat Corporation | Power converter arrangement for integration into a ship structure |
US6305998B1 (en) * | 1999-07-16 | 2001-10-23 | A. Friedr. Flender Ag | Marine drive mechanism with twin-engine distribution transmission |
US6487061B1 (en) | 2000-01-27 | 2002-11-26 | Vssi Commercial, Inc. | Electromagnet support system |
US6505806B1 (en) | 2000-05-09 | 2003-01-14 | Husky Injection Molding Systems, Ltd. | Dynamic machine mount |
US20030203685A1 (en) * | 2000-04-28 | 2003-10-30 | Sexton David C | Arrangement for damping of structural resonance |
US20040024503A1 (en) * | 2002-03-06 | 2004-02-05 | Swinbanks Malcolm A. | Active suspension for a marine platform |
US20060151272A1 (en) * | 2002-09-24 | 2006-07-13 | Smith Michael R | Piezoelectric liquid inertia vibration eliminator |
US20130312433A1 (en) * | 2011-02-17 | 2013-11-28 | Johnson Controls Technology Company | Magnetic attenuator |
US8882091B2 (en) | 2011-11-11 | 2014-11-11 | Textron Innovations Inc. | Vibration isolation system |
US9297439B2 (en) | 2009-03-12 | 2016-03-29 | Textron Innovations Inc. | Method and apparatus for improved vibration isolation |
US9446841B2 (en) | 2008-12-18 | 2016-09-20 | Textron Innovations Inc. | Method and apparatus for improved vibration isolation |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3908577A1 (en) * | 1989-03-16 | 1990-09-20 | Laukien Guenther | METHOD AND DEVICE FOR REDUCING THE SOUND EMISSION OF SUBMERSIBLES SUBMERSIBLE |
GB2313645B (en) * | 1996-03-08 | 2000-04-26 | Marconi Gec Ltd | Levitation device |
GB2311502B (en) * | 1996-03-08 | 2000-06-14 | Marconi Gec Ltd | Mounting of machinery within a vessel |
GB2365945B (en) * | 2000-08-16 | 2004-02-11 | Rolls Royce Plc | A vibration damping system and a method of damping vibrations |
DE10223965A1 (en) * | 2002-05-29 | 2003-12-11 | Siemens Ag | Vibration damping device for propulsion units of ship propulsion systems of surface and underwater ships |
CN104776142B (en) * | 2015-04-09 | 2017-03-15 | 江苏高精机电装备有限公司 | Tower Buoyant Raft Shock-resistant System |
Citations (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3088062A (en) * | 1956-02-10 | 1963-04-30 | Albert A Hudimac | Electromechanical vibratory force suppressor and indicator |
GB1173658A (en) * | 1966-05-26 | 1969-12-10 | Allinquant Fernand St | Improvements in Oleopneumatic Suspensions. |
US3911829A (en) * | 1974-09-25 | 1975-10-14 | Rohr Industries Inc | Wheeled vehicle magnetic suspension system |
US3941402A (en) * | 1975-03-03 | 1976-03-02 | Yankowski Anthony P | Electromagnetic shock absorber |
US3952979A (en) * | 1975-02-19 | 1976-04-27 | Hughes Aircraft Company | Isolator |
DE2804865A1 (en) * | 1977-02-04 | 1978-08-10 | Europ Propulsion | DEVICE FOR STABILIZING AT LEAST ONE MOVABLE DIMENSIONS WITHIN A LEVEL WITHIN A PRE-DETERMINED FREQUENCY BAND |
DE3024917A1 (en) * | 1979-07-02 | 1981-01-15 | Toyota Motor Co Ltd | FEEDBACK-CONTROLLED SHOCK ABSORBER DEVICE |
EP0027195A2 (en) * | 1979-10-11 | 1981-04-22 | Eaton-Optimetrix Inc. | Improved shock and vibration isolation system |
GB2119897A (en) * | 1982-04-19 | 1983-11-23 | George Brian Barrie Chaplin | Method of and apparatus for active vibration isolation |
US4595166A (en) * | 1985-03-19 | 1986-06-17 | San-Ai Kogyo Kabushiki Kaisha | Vibration isolating table device |
US4615504A (en) * | 1984-11-15 | 1986-10-07 | Rca Corporation | Anti-vibration device |
US4624435A (en) * | 1983-04-20 | 1986-11-25 | Tillmann Freudenberg | Electro-magnetic vibration-damping mount |
US4650170A (en) * | 1983-06-27 | 1987-03-17 | Nissan Motor Co., Ltd. | Vibration-proofing device |
US4848525A (en) * | 1987-11-02 | 1989-07-18 | The Boeing Company | Dual mode vibration isolator |
US4869474A (en) * | 1987-05-08 | 1989-09-26 | Btr Plc | Vehicle engine suspension systems |
-
1988
- 1988-07-07 GB GB888816188A patent/GB8816188D0/en active Pending
-
1989
- 1989-07-07 DE DE8989306953T patent/DE68904705T2/en not_active Expired - Lifetime
- 1989-07-07 US US07/376,550 patent/US5022628A/en not_active Expired - Lifetime
- 1989-07-07 GB GB8915636A patent/GB2221743B/en not_active Expired - Lifetime
- 1989-07-07 EP EP89306953A patent/EP0350333B1/en not_active Expired - Lifetime
Patent Citations (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3088062A (en) * | 1956-02-10 | 1963-04-30 | Albert A Hudimac | Electromechanical vibratory force suppressor and indicator |
GB1173658A (en) * | 1966-05-26 | 1969-12-10 | Allinquant Fernand St | Improvements in Oleopneumatic Suspensions. |
US3911829A (en) * | 1974-09-25 | 1975-10-14 | Rohr Industries Inc | Wheeled vehicle magnetic suspension system |
US3952979A (en) * | 1975-02-19 | 1976-04-27 | Hughes Aircraft Company | Isolator |
US3941402A (en) * | 1975-03-03 | 1976-03-02 | Yankowski Anthony P | Electromagnetic shock absorber |
GB1601096A (en) * | 1977-02-04 | 1981-10-21 | Europ Propulsion | Suspension system |
US4244629A (en) * | 1977-02-04 | 1981-01-13 | Societe Europeenne De Propulsion | Device for the horizontal stabilization of a vertically supported mass |
DE2804865A1 (en) * | 1977-02-04 | 1978-08-10 | Europ Propulsion | DEVICE FOR STABILIZING AT LEAST ONE MOVABLE DIMENSIONS WITHIN A LEVEL WITHIN A PRE-DETERMINED FREQUENCY BAND |
FR2379732A1 (en) * | 1977-02-04 | 1978-09-01 | Europ Propulsion | HORIZONTAL STABILIZATION DEVICE FOR A MASS WITH VERTICAL INERTIAL SUPPORT |
DE3024917A1 (en) * | 1979-07-02 | 1981-01-15 | Toyota Motor Co Ltd | FEEDBACK-CONTROLLED SHOCK ABSORBER DEVICE |
US4351515A (en) * | 1979-07-02 | 1982-09-28 | Toyota Jidosha Kogyo Kabushiki Kaisha | Feedback control type shock absorbing suspension system |
EP0103188A2 (en) * | 1979-10-11 | 1984-03-21 | Eaton-Optimetrix Inc. | Improved shock and vibration isolation system |
EP0027195A2 (en) * | 1979-10-11 | 1981-04-22 | Eaton-Optimetrix Inc. | Improved shock and vibration isolation system |
GB2119897A (en) * | 1982-04-19 | 1983-11-23 | George Brian Barrie Chaplin | Method of and apparatus for active vibration isolation |
US4624435A (en) * | 1983-04-20 | 1986-11-25 | Tillmann Freudenberg | Electro-magnetic vibration-damping mount |
US4650170A (en) * | 1983-06-27 | 1987-03-17 | Nissan Motor Co., Ltd. | Vibration-proofing device |
US4615504A (en) * | 1984-11-15 | 1986-10-07 | Rca Corporation | Anti-vibration device |
US4595166A (en) * | 1985-03-19 | 1986-06-17 | San-Ai Kogyo Kabushiki Kaisha | Vibration isolating table device |
US4869474A (en) * | 1987-05-08 | 1989-09-26 | Btr Plc | Vehicle engine suspension systems |
US4848525A (en) * | 1987-11-02 | 1989-07-18 | The Boeing Company | Dual mode vibration isolator |
Non-Patent Citations (13)
Title |
---|
A Survey of Optimal Control of Distributed Parameter Systems. A. C. Robinson Office of Aerospace Research, USAF, ARL 69 0177, Nov. 1979, pp. 4 and 38 39. * |
A Survey of Optimal Control of Distributed Parameter Systems. A. C. Robinson Office of Aerospace Research, USAF, ARL 69-0177, Nov. 1979, pp. 4 and 38-39. |
B. Chaplin, Anti Noise The Essex Breakthrough, CME, Jan. 1983, pp. 41 47. * |
B. Chaplin, Anti-Noise-The Essex Breakthrough, CME, Jan. 1983, pp. 41-47. |
Maglev at Birmingham Airport from System Concept to Successful Operation. V. Nenadovic and E. E. Riches, GEC Review, vol. I, No. 1, 1985. * |
Maglev at Birmingham Airport-from System Concept to Successful Operation. V. Nenadovic and E. E. Riches, GEC Review, vol. I, No. 1, 1985. |
R. J. Richards, An Introduction to Dynamics and Control, J. Wiley & Sons, 1979, pp. 339 343. * |
R. J. Richards, An Introduction to Dynamics and Control, J. Wiley & Sons, 1979, pp. 339-343. |
Some Recent Practical and Theoretical Developments in Noise Reduction in Ships. M. C. Hartnell Beavis & M. A. Swinbanks, Institute of Marine Engineers, 21st Oct. 1976, Vibration and Noise Conference 1976. * |
Some Recent Practical and Theoretical Developments in Noise Reduction in Ships. M. C. Hartnell-Beavis & M. A. Swinbanks, Institute of Marine Engineers, 21st Oct. 1976, Vibration and Noise Conference 1976. |
The Handbook of Personal Computer Instrumentation, (3rd Edition), Burr Brown Corp. and Intelligent Instrumentation, Inc., 1 88, pp. 6 3. * |
The Handbook of Personal Computer Instrumentation, (3rd Edition), Burr-Brown Corp. and Intelligent Instrumentation, Inc., 1-88, pp. 6-3. |
The Yarrow Constant Position Mounting Element, Shipbuilding & Marine International, Oct. 1973. * |
Cited By (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5209326A (en) * | 1989-03-16 | 1993-05-11 | Active Noise And Vibration Technologies Inc. | Active vibration control |
US5348124A (en) * | 1989-03-16 | 1994-09-20 | Active Noise And Vibration Technologies, Inc. | Active control of vibration |
US5121898A (en) * | 1989-07-24 | 1992-06-16 | Tokkyo Kiki Kabushiki Kaisha | Method of controlling positions and vibrations and active vibration control apparatus therefor |
EP0514877A2 (en) * | 1991-05-20 | 1992-11-25 | Ebara Corporation | Vibration eliminating apparatus for eliminating vibration of installation floor |
EP0514877A3 (en) * | 1991-05-20 | 1993-01-20 | Ebara Corporation | Vibration eliminating apparatus for eliminating vibration of installation floor |
US5385217A (en) * | 1991-05-20 | 1995-01-31 | Ebara Corporation | Vibration eliminating apparatus for elminating vibration of an installation floor |
US5387851A (en) * | 1991-08-22 | 1995-02-07 | Mtu Motoren-Und Turbinen-Union Muenchen Gmbh | Closed loop control apparatus with frequency filters for controlling an air gap width in electromagnetic levitation systems |
US5827095A (en) * | 1995-04-19 | 1998-10-27 | Abb Industry Oy | Mount structure for supporting an electric apparatus on a ground base |
US5794909A (en) * | 1996-09-16 | 1998-08-18 | Minus K Technology, Inc. | Auto-adjust apparatus for a vibration isolation system |
EP0992424A2 (en) | 1998-10-07 | 2000-04-12 | Electric Boat Corporation | Power converter arrangement for integration into a ship structure |
US6142090A (en) * | 1998-10-07 | 2000-11-07 | Electric Boat Corporation | Power converter arrangement for integration into a ship structure |
US6305998B1 (en) * | 1999-07-16 | 2001-10-23 | A. Friedr. Flender Ag | Marine drive mechanism with twin-engine distribution transmission |
JP2003521650A (en) * | 2000-01-27 | 2003-07-15 | ヴィーエスエスエル コマーシャル インコーポレイテッド | Electromagnetic support system |
US6487061B1 (en) | 2000-01-27 | 2002-11-26 | Vssi Commercial, Inc. | Electromagnet support system |
US20030203685A1 (en) * | 2000-04-28 | 2003-10-30 | Sexton David C | Arrangement for damping of structural resonance |
US7013832B2 (en) * | 2000-04-28 | 2006-03-21 | Bae Systems Plc | Arrangement for damping of structural resonance |
US6505806B1 (en) | 2000-05-09 | 2003-01-14 | Husky Injection Molding Systems, Ltd. | Dynamic machine mount |
US9771150B2 (en) | 2000-09-26 | 2017-09-26 | Bell Helicopter Textron Inc. | Piezoelectric liquid inertia vibration eliminator |
US20040024503A1 (en) * | 2002-03-06 | 2004-02-05 | Swinbanks Malcolm A. | Active suspension for a marine platform |
US7039512B2 (en) | 2002-03-06 | 2006-05-02 | Vssl Commercial, Inc. | Active suspension for a marine platform |
US20060151272A1 (en) * | 2002-09-24 | 2006-07-13 | Smith Michael R | Piezoelectric liquid inertia vibration eliminator |
US8499907B2 (en) | 2002-09-24 | 2013-08-06 | Bell Helicopter Textron Inc. | Piezoelectric liquid inertia vibration eliminator |
CN102678806B (en) * | 2002-09-24 | 2015-09-23 | 贝尔直升机泰克斯特龙公司 | A kind of method controlling the sound radiation of ship |
CN102678806A (en) * | 2002-09-24 | 2012-09-19 | 贝尔直升机泰克斯特龙公司 | Method for controlling sound radiation of ship |
US9446841B2 (en) | 2008-12-18 | 2016-09-20 | Textron Innovations Inc. | Method and apparatus for improved vibration isolation |
US9297439B2 (en) | 2009-03-12 | 2016-03-29 | Textron Innovations Inc. | Method and apparatus for improved vibration isolation |
US20130312433A1 (en) * | 2011-02-17 | 2013-11-28 | Johnson Controls Technology Company | Magnetic attenuator |
US8882091B2 (en) | 2011-11-11 | 2014-11-11 | Textron Innovations Inc. | Vibration isolation system |
Also Published As
Publication number | Publication date |
---|---|
DE68904705T2 (en) | 1993-05-27 |
DE68904705D1 (en) | 1993-03-18 |
EP0350333B1 (en) | 1993-02-03 |
EP0350333A2 (en) | 1990-01-10 |
EP0350333A3 (en) | 1990-07-04 |
GB2221743A (en) | 1990-02-14 |
GB8816188D0 (en) | 1988-11-16 |
GB8915636D0 (en) | 1989-08-23 |
GB2221743B (en) | 1992-04-08 |
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AS | Assignment |
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Owner name: GEC-MARCONI LIMITED Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:GEC-MARCONI (HOLDINGS) LIMITED;REEL/FRAME:006627/0425 Effective date: 19930526 |
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Owner name: BAE SYSTEMS PLC, UNITED KINGDOM Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:BAE SYSTEMS ELECTRONICS LIMITED;REEL/FRAME:017275/0483 Effective date: 20050831 |